CN218381153U

CN218381153U - Non-magnetic metering device of intelligent water meter

Info

Publication number: CN218381153U
Application number: CN202222563173.7U
Authority: CN
Inventors: 杨大智; 臧立; 刘宝林
Original assignee: Tianjin Snewsun Energy Technology Co ltd
Current assignee: Tianjin Snewsun Energy Technology Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-01-24
Anticipated expiration: 2032-09-27

Abstract

The utility model discloses a no magnetism metering device of intelligence water gauge, including rotating assembly, sheetmetal and determine module, rotating assembly sets up the below of sheetmetal for it is rotatory to drive the sheetmetal, determine module sets up the top of sheetmetal, determine module is used for measuring the positional information and the rotation information of sheetmetal, determine module comprises component layer and coil layer, the coil layer includes exciting coil and induction coil, the component layer directly sets up on the coil layer, electrical components arranges the region in the exciting coil orthographic projection district outside on the component layer on coil layer. The utility model discloses an arrange the component outside excitation coil projection district, guarantee that the component layer does not influence all induction coil's response and receive, can guarantee when not adding the shielding layer that the component layer does not influence all induction coil's response and receive, detection distance promotes and the consumption reduces.

Description

Non-magnetic metering device of intelligent water meter

Technical Field

The utility model relates to a water gauge technical field specifically is an intelligence water gauge does not have magnetism metering device.

Background

As shown in fig. 1, the present non-magnetic module design scheme is that the PCB in the scheme is composed of at least three layers of PCBs, and the three layers of PCBs have the following functions: an element layer, a shield layer, a coil layer, etc. The utility model with the patent number of CN216081515U discloses a non-magnetic sensor coil with different surfaces, which records the design scheme of arranging the coil layer to two different layers, and places the induction coil group on a plurality of planes, so as to increase the area of a single induction coil in the excitation coil, receive more magnetic flux changes and achieve the purpose of increasing the detection distance; however, in this design, in order to avoid interference of the element layer with the coil layer, a shield layer has to be provided.

The principle of the control circuit for detecting metal rotation is that when a coil measures a distance, an outer coil sends out an excitation signal, an inner coil detects the excitation signal, when the rotating metal rotates to the position below a corresponding inner coil, the excitation signal received by the inner coil is weakened due to the eddy current principle of a metal conductor in a magnetic field, and other coils can obtain different signal values on different coils due to the fact that the other coils are not influenced or slightly influenced by the metal rotor, and the signal values are detected by a microcontroller on a control unit, and the rotating direction and the number of turns of the metal rotor can be identified by judging the sequence of signal changes on different coils.

From the principle, when metal objects are arranged around the coil layer, eddy currents are generated by the metal objects, and then different signal values detected by the inner ring induction coil are derived. The element layer is located right above the coil layer, the distance is only 1-2mm, the element layer is composed of a large number of metal wires and metal devices, and the metal wires and the metal devices cannot be balanced very well, so that if the middle shielding layer is not arranged, the coil layer is seriously interfered, and the product cannot normally function. The shielding layer for shielding is also made of metal, the metal area of the shielding layer is large, the distance is short (1-2 mm), and the shielding layer can generate a large eddy current, which will seriously affect the receiving efficiency of the secondary induction coil (the receiving efficiency also causes the shortening of the detection distance), and at the same time, will cause additional power consumption, resulting in the increase of the power consumption.

From the manufacturing process of the PCB, the basic boards are double-sided boards, new PCBs need to be bonded layer by layer on the basis of the double-sided boards for manufacturing the multilayer boards, and if blind holes are buried, the process is more complicated, the reject ratio is higher, so that the price of the multilayer boards is far higher than that of the double-sided boards in terms of product price, and meanwhile, the processing period is much longer than that of the double-sided boards.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides a be applied to no magnetism metering device of intelligent water gauge through arranging the component outside excitation coil projection district, guarantees that the component layer does not influence all induction coil's induction reception, can guarantee when not adding the shielding layer that the component layer does not influence all induction coil's induction reception, and detection distance promotes and the consumption reduction.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a no magnetism metering device of intelligence water gauge, includes rotating assembly, sheetmetal and determine module, rotating assembly sets up the below of sheetmetal for it is rotatory to drive the sheetmetal, determine module sets up the top of sheetmetal, determine module is used for measuring the positional information and the rotation information of sheetmetal, determine module comprises component layer and coil layer, the coil layer includes exciting coil and induction coil, the component layer directly sets up on the coil layer, electrical components arranges be in the area in the exciting coil orthographic projection district outside on the component layer on the coil layer.

Preferably, the excitation coil and the induction coil are both arranged on the substrate, the excitation coil is annularly arranged, and the induction coil is uniformly distributed in the excitation coil.

Preferably, the external shapes of the exciting coil and the induction coil are both circular.

Preferably, all the electrical components on the component layer are arranged on one side of the component layer.

Preferably, the shape of the side of the element layer where no electrical element is arranged is a circular arc shape corresponding to the shape structure of the coil layer, and the shape of the side of the element layer where the electrical element is arranged is a rectangle.

Preferably, the element layer comprises a signal transmitting circuit, a sampling circuit and a controller, the signal transmitting circuit comprises a transmitting coil and a driver, a passive high-pass filter circuit is arranged between the controller and the signal transmitting circuit, the passive high-pass filter circuit is connected with the driver and used for filtering low-frequency interference signals, the sampling circuit comprises three sets of induction coils and three level switch tubes, the three sets of induction coils are used for receiving excitation signals of the transmitting coil and respectively controlling the opening degree of the corresponding level switch tubes by using induced voltage signals;

a passive filter circuit is arranged between the sampling circuit and the controller, the passive filter circuit comprises three capacitors which are respectively connected with the collector electrodes of the level switch tubes, and the other ends of the capacitors are grounded; the three ends of the capacitor connected with the collector of the level switch tube are respectively connected with different signal output ends of the controller and used for charging the capacitor through the controller, and the sampling circuit further comprises a discharge resistor connected with the emitter of the three level switch tubes.

Preferably, the passive high-pass filter circuit adopts an RC filter circuit, the output end of the driver is connected to the transmitting coil, and the other end of the transmitting coil is grounded.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a no magnetism metering device of intelligence water gauge is through arranging the component outside exciting coil projection district, guarantees that the component layer does not influence all induction coil's response and receives, can guarantee that the component layer does not influence all induction coil's response and receive when not adding the shielding layer, and detection distance promotes and the consumption reduces.

Drawings

FIG. 1 is a schematic diagram of a non-magnetic module of the prior art using three layers of PCB boards;

fig. 2 is a schematic view of a front view structure of a detection assembly in a non-magnetic metering device of an intelligent water meter;

fig. 3 is a schematic structural view of a component layer in a non-magnetic metering device of an intelligent water meter according to the present invention;

fig. 4 is a schematic structural view of a coil layer in the non-magnetic metering device of the intelligent water meter of the present invention;

fig. 5 is a schematic circuit diagram of an element layer in the non-magnetic metering device of an intelligent water meter.

In the figure: 1. a circuit substrate; 2. a sampling circuit; 3. a signal transmitting circuit; 4. a passive filter circuit; 5. a passive high-pass filter circuit; 6. a controller; 7. an element layer; 8. a coil layer; 801. an exciting coil; 802. an induction coil; 9. and (3) electrical components.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

As shown in fig. 2-4, the utility model provides a first embodiment, a no magnetism metering device of intelligence water gauge, including rotating assembly, sheetmetal and determine module, rotating assembly sets up the below of sheetmetal for it is rotatory to drive the sheetmetal, determine module sets up the top of sheetmetal, determine module is used for measuring the positional information and the rotation information of sheetmetal, determine module comprises component layer 7 and coil layer 8, coil layer 8 includes exciting coil 801 and induction coil 802, component layer 7 directly sets up on the coil layer 8, electrical components 9 arranges be in the area outside the exciting coil 801 orthographic projection district of coil layer 8 on the component layer 7. The exciting coil 801 and the induction coil 802 are both arranged on the substrate, the exciting coil 801 is annularly arranged, the induction coils 802 are uniformly distributed inside the exciting coil 801, the exciting coil 801 and the induction coil 802 are both circular in shape, the number of the induction coils 802 in this embodiment is three, and all the electrical components 9 on the component layer 7 are all arranged on one side of the component layer 7, so that the influence on the induction coils 802 can be avoided to the greatest extent.

The detection assembly of the non-magnetic metering device adopts a double-panel structure design, can reduce the manufacturing process, and avoids the influence of the element layer 7 on the coil layer 8, the element layer 7 adopts a non-circular shape mode, namely, the shape of one side, which is not provided with the electric appliance element 9, of the element layer 7 is set into a circular arc shape corresponding to the shape structure of the coil layer 8, the shape of one side, which is provided with the electric appliance element 9, of the element layer 7 is set into a rectangular shape, the coil still adopts a circular shape, the elements are arranged outside the projection area of the exciting coil 801, and the element layer 7 is ensured not to influence the induction receiving of all the induction coils 802, so that a good shielding effect can be achieved without an intermediate shielding layer.

As shown in fig. 5, the element layer 7 includes a signal transmitting circuit 3, a sampling circuit 2 and a controller 6, the signal transmitting circuit 3 includes a transmitting coil and a driver, the signal transmitting circuit 3 and the sampling circuit 2 are both disposed on the circuit substrate 1, a passive high-pass filter circuit 5 is disposed between the controller 6 and the signal transmitting circuit 3, the passive high-pass filter circuit 5 is connected to the driver and is configured to filter low-frequency interference signals, the sampling circuit 2 includes three sets of sensing coils 802 and three level switching tubes, the three sets of sensing coils 802 are configured to receive excitation signals of the transmitting coil, and the induced voltage signals are used to control the opening degree of the corresponding level switching tubes respectively;

a passive filter circuit 4 is arranged between the sampling circuit 2 and the controller 6, the passive filter circuit 4 comprises three capacitors respectively connected with the collector electrodes of the level switch tubes, and the other ends of the capacitors are grounded; the three capacitors are connected with the collector of the level switch tube at one end and respectively connected with different signal output ends of the controller 6, and are used for charging the capacitors through the controller 6, and the sampling circuit 2 further comprises discharge resistors which are respectively connected with the emitters of the three level switch tubes; the passive high-pass filter circuit 5 adopts an RC filter circuit, the output end of the driver is connected with the transmitting coil, and the other end of the transmitting coil is grounded.

A set of passive high-pass filter is configured before the excitation signal is input into a driver of the signal transmitting circuit 3, so that low-frequency interference components can be filtered, the excitation effect is guaranteed, after the attenuated excitation signal in a detected space is received by the induction coils 802 (A) (B) (C) in the sampling circuit 2, a voltage signal is induced to directly control the opening degree of the level switch tube, and after the high-frequency interference signal is filtered by the passive filter circuit 4, the high-frequency interference signal is directly sent to the controller 6 for signal resolving. The induction coil 802, the level switch tube, the filter capacitor and the resistor connected with the emitter of the level switch tube form a discharge loop, the controller 6 controls the filter capacitor to be charged, and the opening degree of the level switch tube depends on the discharge speed. When the semimetal sheet of the base meter rotates to the position below the corresponding induction coil 802, the falling speed of the collector voltage of the level switch tube of the receiving circuit is reduced, the voltage is obviously higher than that of the other two paths, and when the semimetal sheet of the base meter rotates to the position farthest away from the induction coil 802, the falling speed of the collector voltage of the level switch tube of the receiving circuit is fastest. Different signal values can be obtained on the three different coils in the rotation process of the semi-metal sheet, and the signal values are detected by the controller 6, and the rotation direction, the rotation turns and the rotation speed of the semi-metal sheet can be identified by judging the sequence of signal changes on the different coils. The detection circuit can independently realize the rotation direction detection, the rotation speed detection and the position detection of a detected object by utilizing the detection voltage of each induction coil 802 channel, three groups of calculation data can be mutually calibrated, the calculation amount is small, and the accuracy is high.

The working principle is as follows: on the one hand, no magnetism metering device of intelligence water gauge guarantees that component layer 7 does not influence all induction coil 802's induction reception through arranging the component outside exciting coil 801 projection district, can guarantee that component layer 7 does not influence all induction coil 802's induction reception when not adding the shielding layer, and detection distance promotes and the consumption reduces. On the other hand, through the signal transmitting circuit 3, the sampling circuit 2 and the controller 6 designed by the element layer 7, after the transmitting coil sends out an excitation signal, the induction coil 802 can receive the signal, and discharge the capacitor on the loop after amplification, and finally the controller 6 detects the voltage value of the capacitor to calculate the magnitude of the excitation signal on the coil, so as to analyze the position and the rotating direction of the detected rotating metal body; the detection circuit can independently realize the rotation direction detection, the rotation speed detection and the position detection of a detected object by utilizing the detection voltage of each induction coil 802 channel, three groups of calculation data can be mutually calibrated, the calculation amount is small, and the accuracy is high.

In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a no magnetism metering device of intelligence water gauge, includes rotating assembly, sheetmetal and determine module, rotating assembly sets up the below of sheetmetal for it is rotatory to drive the sheetmetal, determine module sets up the top of sheetmetal, its characterized in that, determine module is used for measuring the positional information and the rotation information of sheetmetal, determine module comprises component layer (7) and coil layer (8), coil layer (8) are including exciting coil (801) and induction coil (802), component layer (7) directly set up on coil layer (8), electrical components (9) are arranged be in the region outside the exciting coil (801) orthographic projection district of coil layer (8) on component layer (7).

2. An intelligent water meter non-magnetic metering device according to claim 1, wherein the exciting coil (801) and the induction coil (802) are both arranged on a substrate, the exciting coil (801) is arranged in a ring shape, and the induction coil (802) is uniformly distributed inside the exciting coil (801).

3. The nonmagnetic metering device of an intelligent water meter according to claim 2, characterized in that the external shapes of the exciting coil (801) and the induction coil (802) are both arranged in a circular shape.

4. A non-magnetic metering device of an intelligent water meter according to claim 3, characterized in that all the electric components (9) on the component layer (7) are arranged on one side of the component layer (7).

5. An intelligent water meter non-magnetic metering device according to claim 4, wherein the side of the element layer (7) where the electrical component (9) is not arranged is shaped as an arc corresponding to the shape of the coil layer (8), and the side of the element layer (7) where the electrical component (9) is arranged is shaped as a rectangle.

6. An intelligent water meter non-magnetic metering device according to any one of claims 1 to 5, wherein the element layer (7) comprises a signal transmitting circuit (3), a sampling circuit (2) and a controller (6), the signal transmitting circuit (3) comprises a transmitting coil and a driver, a passive high-pass filter circuit (5) is arranged between the controller (6) and the signal transmitting circuit (3), the passive high-pass filter circuit (5) is connected with the driver and used for filtering low-frequency interference signals, the sampling circuit (2) comprises three sets of induction coils (802) and three level switch tubes, the three sets of induction coils (802) are used for receiving excitation signals of the transmitting coil and respectively controlling the opening degree of the corresponding level switch tubes by using induced voltage signals;

a passive filter circuit (4) is arranged between the sampling circuit (2) and the controller (6), the passive filter circuit (4) comprises three capacitors which are respectively connected with the collector electrodes of the level switch tubes, and the other ends of the capacitors are grounded; the three ends of the capacitor connected with the collector of the level switch tube are respectively connected with different signal output ends of the controller (6) and used for charging the capacitor through the controller (6), and the sampling circuit (2) further comprises discharge resistors connected with the emitters of the three level switch tubes.

7. The non-magnetic metering device of the intelligent water meter according to claim 6, wherein the passive high-pass filter circuit (5) adopts an RC filter circuit, the output end of the driver is connected with the transmitting coil, and the other end of the transmitting coil is grounded.